If we type in the following command into an Ubuntu 22.10 terminal session:

sudo add-apt-repository ppa:ondrej/php

We will see the following error:

E: The repository 'https://ppa.launchpadcontent.net/ondrej/php/ubuntu kinetic Release' does not have a Release file.

At the time of writing this article, the ondrej repository DOES NOT support Ubuntu 22.10 (code name kinetic). Hence the reference in the message to Ubuntu kinetic Release.

The solution is very simple, first, we edit the ondrej-ubuntu-php-kinetic.list file:

sudo nano /etc/apt/sources.list.d/ondrej-ubuntu-php-kinetic.list

And replace the word kinetic in the first line to read:

deb https://ppa.launchpadcontent.net/ondrej/php/ubuntu/ jammy main

Save the changes and update the system.

sudo apt update

reference

https://www.davidl.co.uk/post/installing-php-7x-on-ubuntu-2210-kinetic

It's hard getting the exact PHP 8.1.22 version. However, if you are OK with something close to it, 8.1.24 is the current version at ppa:ondrej/php.

• Remove your current PHP 8.1:

  sudo apt remove php8.1
  

• Install ondrej's repo:

  sudo add-apt-repository ppa:ondrej/php
  sudo apt update
  

• Install PHP 8.1:

  sudo apt install php8.1
  

• Disable the default PHP 8.2 in Ubuntu 22.04:

  sudo a2dismod php8.2
  

• Enable PHP 8.1:

  sudo a2enmod php8.1
  

• Restart the Apache:

  sudo service apache2 restart